公开(公告)号：US20190105637A1

公开(公告)日：2019-04-11

申请号：US16151847

申请日：2018-10-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Hiromasa SUZUKI ,  Yoshinori SAITO ,  Tatsuya OHASHI ,  Shunsuke OHISHI ,  Takaya OTA

IPC: B01J23/46 ,  B01J23/44 ,  B01J35/00 ,  B01D53/94 ,  F01N3/28

CPC classification number: B01J23/464 ,  B01D53/945 ,  B01D53/9468 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/407 ,  B01D2255/9022 ,  B01D2255/9025 ,  B01D2255/9032 ,  B01D2255/908 ,  B01J23/44 ,  B01J35/0006 ,  B01J35/0066 ,  F01N3/28 ,  F01N2370/02 ,  F01N2510/06 ,  F01N2510/0682 ,  F01N2510/0684

Abstract: The exemplary embodiments relate to an exhaust gas purification catalyst that is excellent in terms of HC purification capacity and warm-up performance. Such exhaust gas purification catalyst comprises a substrate and a catalyst coating layer formed on the surface of the substrate, wherein the catalyst coating layer comprises an upper and lower layer comprising a lower layer being closer to the surface of the substrate and an upper layer being relatively remote from the surface of the substrate, the upper layer of the catalyst coating layer comprises Rh, Pd, and a carrier, the upper layer of the catalyst coating layer comprises an uppermost surface Pd layer having a Pd concentration relatively higher than that in any other portion in the upper layer within an area extending over a length of 20 mm or more from one end on the upstream side in the downstream direction on the surface of the upper layer, the lower layer of the catalyst coating layer comprises at least one noble metal selected from Pd and Pt and a carrier, and 60% or more of Pd by mass in the uppermost surface Pd layer exists in a layer up to 50% of the upper layer in a thickness direction from the surface of the uppermost surface Pd layer being relatively remote from the surface of the substrate.

公开(公告)号：US20180243728A1

公开(公告)日：2018-08-30

申请号：US15553020

申请日：2016-02-17

Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

Inventor： Satoru KATOH ,  Toshitaka TANABE ,  Masahide MIURA ,  Hiromasa SUZUKI ,  Hiroaki NAITO ,  Hirotaka ORI ,  Keiichi NARITA ,  Michihiko TAKEUCHI ,  Tatsuya OHASHI

IPC: B01J23/63 ,  B01D53/94 ,  B01J35/02 ,  B01J35/10 ,  B01J37/02 ,  B01J37/08 ,  B01J35/04 ,  F01N3/28

CPC classification number: B01J23/63 ,  B01D53/94 ,  B01D2255/1021 ,  B01D2255/407 ,  B01D2255/9202 ,  B01J35/023 ,  B01J35/026 ,  B01J35/04 ,  B01J35/10 ,  B01J35/1076 ,  B01J35/108 ,  B01J37/0018 ,  B01J37/0036 ,  B01J37/0219 ,  B01J37/0234 ,  B01J37/08 ,  F01N3/28 ,  F01N2330/02 ,  F01N2330/06 ,  F01N2510/068

Abstract: A catalyst for purification of exhaust gas, wherein a substrate and a catalyst coat layer which is formed on a surface of the substrate and which comprises catalyst particles, wherein the catalyst coat layer has an average thickness in a range of 25 to 160 μm, and a void fraction in a range of 50 to 80% by volume as measured by a weight-in-water method, 0.5 to 50% by volume of all voids in the catalyst coat layer consist of high-aspect ratio pores which have equivalent circle diameters in a range of 2 to 50 μm in a cross-sectional image of a cross-section of the catalyst coat layer which the cross-section is perpendicular to a flow direction of exhaust gas in the substrate, and which have aspect ratios of 5 or higher, and the high-aspect ratio pores have an average aspect ratio in a range of 10 to 50.

公开(公告)号：US20130315788A1

公开(公告)日：2013-11-28

申请号：US13897764

申请日：2013-05-20

Applicant: DENSO CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hiromasa SUZUKI ,  Michiharu NAKANO ,  Masaru KAKINOHANA ,  Hiroyuki MATSUBARA ,  Masakazu MURATA ,  Naohiro HAYASHI

IPC: B01D53/94

CPC classification number: B01D53/94 ,  B01D53/9477 ,  B01D2255/904 ,  B01D2255/9202

Abstract: A catalytic converter has a carrier with a cell structure, and a precious metal catalyst carried on the carrier. The carrier includes a first carrier and a second carrier. The second carrier is provided downstream of the first carrier in a gas flow direction of gas that flows into the catalytic converter. The first carrier has a first peripheral region and a first center region that has a lower cell density than the first peripheral region. The second carrier has a second center region and a second peripheral region that has a lower cell density than the second center region.

Abstract translation: 催化转化器具有带有电池结构的载体和载体上载有的贵金属催化剂。 载体包括第一载体和第二载体。 第二载体在流入催化转化器的气体的气流方向上设置在第一载体的下游。 第一载体具有第一周边区域和具有比第一周边区域更低的单元密度的第一中心区域。 第二载体具有比第二中心区域小的单元密度的第二中心区域和第二周边区域。

公开(公告)号：US20210094027A1

公开(公告)日：2021-04-01

申请号：US16970667

申请日：2019-01-25

Applicant: CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shunsuke OISHI ,  Takaya OTA ,  Isao CHINZEI ,  Hiromasa SUZUKI ,  Yoshinori SAITO ,  Seiji NAKAHIGASHI

IPC: B01J37/02 ,  B01J23/46 ,  B01J23/10 ,  B01J35/00 ,  F01N3/08

Abstract: The exhaust gas purification catalyst device includes an upper layer which includes first carrier particles and rhodium, and a lower layer which includes second carrier particles, and the upper layer includes a rhodium enriched area in the range a, from the upstream end in the exhaust gas flow to 50% of the upper layer length, and a range b from the upper layer top surface to 18 μm in the depth direction. The rhodium enriched area contains at least 50% and less than 100% of all the rhodium in the upper layer.

公开(公告)号：US20200222890A1

公开(公告)日：2020-07-16

申请号：US16830277

申请日：2020-03-26

Applicant: IBIDEN CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinnosuke GOTO ,  Takumi TOJO ,  Takeru YOSHIDA ,  Hiromasa SUZUKI

IPC: B01J35/04 ,  C04B38/00 ,  B01D53/88

Abstract: The present invention relates to a honeycomb catalytic converter including: a honeycomb structured body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; and a noble metal supported on the honeycomb structured body, wherein each partition wall includes a substrate portion in the form of an extrudate containing a ceria-zirconia complex oxide and alumina, and a coat layer formed on a surface of the substrate portion and containing the noble metal, and the partition walls have a thermal expansion coefficient of 7.0×10−6/° C. to 8.0×10−6/° C. in a longitudinal direction.

公开(公告)号：US20200222881A1

公开(公告)日：2020-07-16

申请号：US16830279

申请日：2020-03-26

Applicant: IBIDEN CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinnosuke GOTO ,  Takumi TOJO ,  Takeru YOSHIDA ,  Hiromasa SUZUKI

IPC: B01J23/46 ,  B01D53/94 ,  B01J23/10 ,  B01J23/44 ,  B01J35/00 ,  B01J35/04 ,  F01N3/28

Abstract: The present invention relates to a honeycomb catalytic converter, including: a honeycomb structured body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; and Pd and Rh supported on the partition walls of the honeycomb structured body, wherein the honeycomb structured body is an extrudate containing a ceria-zirconia complex oxide and alumina, a Pd-carrying region where only Pd is supported is formed on the partition walls within a predetermined width from one end of the honeycomb structured body, and a Rh-carrying region where only Rh is supported is formed on the partition walls within a predetermined width from the other end of the honeycomb structured body, and the Pd-carrying region extends to at least 50% of the length of the honeycomb structured body, and the Rh-carrying region extends to at least 20% of the length of the honeycomb structured body.

公开(公告)号：US20200078983A1

公开(公告)日：2020-03-12

申请号：US16566890

申请日：2019-09-11

Applicant: IBIDEN CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinnosuke GOTO ,  Takeru YOSHIDA ,  Hiromasa SUZUKI ,  Masaru KAKINOHANA ,  Takumi TOJO

IPC: B28B3/20 ,  B28B11/24 ,  B01J35/04 ,  B01J23/63 ,  B01J37/00 ,  B01J37/08 ,  B01J37/02

Abstract: The present invention provides a method of producing a honeycomb structured body having excellent mechanical strength. The present invention relates to a method of producing a honeycomb structured body including a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, the method including: a raw material mixing step of preparing a raw material paste containing ceria-zirconia composite oxide particles, alumina particles, an inorganic binder, and alumina fibers; a molding step of molding the raw material paste into a honeycomb molded body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; a drying step of drying the honeycomb molded body obtained in the molding step; and a firing step of firing the honeycomb molded body dried in the drying step into a honeycomb fired body, wherein the percentage of amorphous alumina fibers in the alumina fibers for use in the raw material mixing step is 50 to 100 wt %.

公开(公告)号：US20190143313A1

公开(公告)日：2019-05-16

申请号：US16245258

申请日：2019-01-11

Applicant: IBIDEN CO., LTD. ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shinnosuke GOTO ,  Kenta NOMURA ,  Takumi TOJO ,  Takeru YOSHIDA ,  Hiromasa SUZUKI

IPC: B01J35/04 ,  B01J23/10 ,  B01J37/08 ,  B01J37/32

Abstract: The present invention relates to a honeycomb structured body including a honeycomb fired body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween, wherein the honeycomb fired body is an extrudate containing ceria-zirconia composite oxide particles, θ-alumina particles, γ-alumina, and α-alumina fibers, and the honeycomb fired body has a porosity of 55 to 70%.

公开(公告)号：US20180353928A1

公开(公告)日：2018-12-13

申请号：US16002147

申请日：2018-06-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshihiro GOTO ,  Akira MORIKAWA ,  Masahide MIURA ,  Hiromasa SUZUKI

IPC: B01J20/02 ,  B01J20/28

CPC classification number: B01J20/0237 ,  B01D53/9445 ,  B01D2255/908 ,  B01J20/28059

Abstract: To provide an oxygen storage material that is capable of exhibiting an excellent oxygen storage capacity (OSC) even at a low temperature of about 300° C. and has a sufficiently high efficiency of use of cerium contained therein.An oxygen storage material including a ceria-zirconia-copper oxide-based composite oxide that contains cerium, zirconium, and copper, in which at least part of the copper is solid-dissolved in a composite oxide of the cerium and the zirconium, the ceria-zirconia-copper oxide-based composite oxide has a composition expressed by the following chemical formula (1): CexZryCuzO2-z  (1) where x, y, and z are numbers each satisfying conditions of x=0.3 to 0.7, y=0.15 to 0.7 (exclusive of y=0.7), z=0 to 0.15 (exclusive of z=0), and x+y+z=1, and a specific surface area of the ceria-zirconia-copper oxide-based composite oxide is 2 to 50 m2/g.

公开(公告)号：US20170282123A1

公开(公告)日：2017-10-05

申请号：US15468956

申请日：2017-03-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Naoki KUMATANI ,  Toshitaka TANABE ,  Akira MORIKAWA ,  Masahide MIURA ,  Hiromasa SUZUKI

IPC: B01D53/94 ,  B01J21/12 ,  B01J37/08 ,  B01J37/00 ,  B01J37/02 ,  B01J23/10 ,  B01J35/00

CPC classification number: B01D53/9413 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/908 ,  B01D2255/9202 ,  B01D2255/9207 ,  B01J23/10 ,  B01J23/63 ,  B01J35/0006 ,  B01J35/002 ,  B01J35/0073 ,  B01J37/0009 ,  B01J37/0036 ,  B01J37/0201 ,  B01J37/0215 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/03 ,  B01J37/08 ,  B01J37/14 ,  B01J37/16 ,  B01J2523/00 ,  B01J2523/31 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/48 ,  B01J2523/824 ,  B01J2523/3718 ,  B01J2523/822

Abstract: A core-shell oxide material comprises: a core which comprises a ceria-zirconia based solid solution powder having at least one ordered phase of a pyrochlore phase and a κ phase; and a shell which comprises an alumina based oxide disposed on at least a portion of a surface of the core.